None of my friends has a smartphone that cost anywhere near $900, because for most people that is just a huge overspend for a phone.
VR has a huge problem breaking through for multiple reasons. You need to devote space to it. You need to wear a sweaty, uncomfortable helmet trailing a bunch of wires. It's an even more isolating, single person activity. Once the
novelty wears off VR can be more hassle than it's worth.
The average person likely does a mix of Internet/productivity/media consumption. Which they could do with a dual core.
When you get beyond that you get into specific niches, like gamers.
So if we are talking about average users, then even 4 cores will likely be overkill for many years to come.
If we are talking about the niches, then it depends on the niche.